Hydroxypropyl methylcellulose (HPMC) i polymer inoshandiswa zvakasiyana-siyana inoshandiswa mumaindasitiri akasiyana siyana, kusanganisira kuvaka.Mumunda wegypsum plaster, HPMC ine akati wandei mashandisiro uye inoita basa rakakosha mukuvandudza mashandiro uye kunaka kwepurasita.
Dzidza nezve Hydroxypropyl Methylcellulose (HPMC):
1. Chimiro chemakemikari uye zvivakwa:
HPMC is semi-synthetic mvura-soluble polima inotorwa kubva ku cellulose.
Iine zvinhu zvakasiyana-siyana zvakadai sekuchengetedza mvura, kukwanisa kukora uye kukwanisa kugadzira firimu.
Iyo kemikari chimiro cheHPMC inosanganisira hydroxypropyl uye methoxy mapoka, ayo anopa iyo polymer chaiyo zvivakwa.
2. Maitiro ekugadzira:
Maitiro ekugadzira anosanganisira etherification ye cellulose, zvichikonzera kuumbwa kweHPMC.
Iyo dhigirii yekutsiva yehydroxypropyl uye methoxy mapoka anogona kugadzirwa kuti akanganisa zvimiro zvepolymer.
Kushandiswa mu gypsum plaster:
1. Kuchengeta mvura:
HPMC inoshanda sechinhu chinochengetedza mvura mukugadzirwa kwegypsum.
Inobatsira kudzora hunyoro, inodzivirira kuoma nekukurumidza uye inovimbisa yunifomu hydration yegypsum particles.
2. Kuvandudza kushanda:
Kuwedzerwa kweHPMC kunowedzera kushanda kwegypsum plaster.
Inopa musanganiswa wepurasita kugadzikana uye kunyorova kunoita kuti zvive nyore kupararira pamusoro.
3. Mukobvu:
Seyakakora mumiriri, HPMC inobatsira kuwedzera viscosity yemusanganiswa wegypsum.
Izvi zvinobatsira nekunamira kurinani kune vertical surfaces uye kuderedza sagging panguva yekushandisa.
4. Seta nguva yekudzora:
HPMC inokanganisa kuseta nguva yegypsum.
Yakakodzera dosage inobvumira kuseta nguva kuti igadziriswe kuti isangane nezvinodiwa zveprojekiti.
5. Kuvandudza adhesion:
Iyo firimu-inogadzira zvimiro zveHPMC inosimudzira kunamatira kwegypsum plaster kune akasiyana ma substrates.
Izvi zvinoita kuti plaster ipedze kusimba uye inogara kwenguva refu.
6. Crack resistance:
HPMC inobatsira kuvandudza simba rose uye kuchinjika kweakakanda.
Iyo polymer inobatsira kuderedza njodzi yekutsemuka, ichipa inogadzikana uye inoyevedza nzvimbo.
7. Kuenderana nezvimwe zvinowedzera:
HPMC ine kugarisana kwakanaka nezvimwe zvinowedzerwa zvinowanzoshandiswa mukugadzirwa kwegypsum.
Izvi zvinobvumira kugadzirwa kweakagadziridzwa plaster musanganiswa zvichienderana nezvinodiwa zveprojekiti.
Hunhu uye Mazano:
1. Mitemo yeindasitiri:
HPMC yepurasita inoomerera kune indasitiri zviyero nemirau.
Matanho ekutonga kwehutano anovimbisa kushanda kwakafanana uye kuvimbika.
2. Kurudziro yedose:
Vagadziri vanopa dosage nhungamiro zvichienderana nezvinodiwa zveiyo gypsum kuumbwa.
Doseji chaiyo yakakosha kuti uwane zvivakwa zvaunoda pasina kukanganisa kuita.
Hydroxypropyl methylcellulose (HPMC) chinhu chakakosha mukugadzirwa kwegypsum, kubatsira kuvandudza kuchengetwa kwayo kwemvura, kushanda, kunamatira uye kuita kwese.Sezvo indasitiri yekuvaka iri kuramba ichishanduka, basa reHPMC mukuvandudza kunaka uye kushanda zvakanaka kwegypsum plaster rinoramba risingakoshese.Nekunzwisisa makemikari zvivakwa uye mashandisirwo eHPMC, nyanzvi dzeindasitiri yekuvaka dzinogona kuita sarudzo dzine ruzivo kuti vawane mibairo yakanaka mumapurojekiti avo ekupurasita.
Nguva yekutumira: Jan-18-2024